I believe the theme, if available, will be preloaded on the device. You can check and are if it is by going to Options > Themes. It might be a little different for you because you have an older device.

I don't have a link as I am away from my computer. Come to think of it the Dimension Today theme might not be available for the 4.1 or 4.0 operating systems. I think I only had that option for a theme on 4.2 OS versions and higher.